Answer:
79.25
Step-by-step explanation:
8*5=40
40-3/8=39.625
39.625*2=79.25
Hope this helps
Answer: One sample z test for means
Step-by-step explanation:
From the information given, the sample size is large. It is greater than 30. Again, the population standard deviation is given. This means that the test statistic would be the z score which is determined by the formula
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = population standard deviation
The probability value would be determined from the normal distribution table.
Therefore, the hypothesis test that should be used is
One sample z test for means
Answer:
The height of the lighthouse is approximately 166.6 feet.
Step-by-step explanation:
Let the height of the lighthouse be represented by s, then;
Tan 48° = (opposite) ÷ (adjacent)
Tan 48° = s ÷ 150
⇒ s = 150 × Tan 48°
= 150 × 1.1106
= 166.59
s ≅ 166.6 feet
Therefore, the height of the lighthouse is approximately 166.6 feet.
y+1=2x-3
y=2x-4
2x-3=y+1
2x-4=y
y=2x-4
2y+2=4x-6
2y=4x-8
y=2x-4
They are all the same: y=2x-4
Answer:
a) 67
b) 122
c) que angulo
d) 40
Step-by-step explanation:
